Gasometer



(No Model.)

J. HANLON.

IGASOMETER.

Patented Mar.6,1883.

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N. PETERS. Phmolilhognphur, Wahinflom D Q NITED STATES PATENT OFFICE.

JOHN HANLON, OF YORK, N. Y., ASSIGNOR TO THE UNITED GAS IMPROVEMENT COMPANY, OF PHILADELPHIA, PENNSYLVANIA.

GASOM ETE'R.

SPECIFICATION forming part of Letters Patent No, 273,521, dated March 6, 1883.

Application filed December 22, 1882. (N0 mode 1.)

specification, in which the figure represents a' gasometer with my improvement attached.

The object of myinvention is clearly set forth in the specification; and it consists in a combination of devices, as hereinafter explained and claimed.

To enable others skilled in the art to make and use my invention, I will proceed to describe the exact manner in which I have carried it out.

When the gas has entered the holder or gasometer it frequently happens that more pressure is needed to force the gas through the mains than is furnished by the weight of the holder itself, and I am not aware of any means in use for increasing this pressure except the use of dead-weights placed on the top of the holder. If less pressure he needed, it is the common practice to use a counter-balance; and the one essential object of my invention is to avoid the use of dead-weight when increased pressure is needed, and to render it as easy to increase as to decrease the pressure in the holder. For this purpose I suspend the weight L by means of the screwbolts l and the cords M. These cords are made to pass over the pulley-blocks m and under the pulley-blocks m and then secured to the holder N at the points it. It is evident from this construction that the tendency of the weight L is to hold down the tank, while the tendency of weight 0, as usually constructed and as shown in the drawing, is to act as a counter-balance to the weight or pressure of the tank. Itis also evident that by simply removing the small detachable plates from one weight to the other the weights L and O can be readily adjusted and the tank given any desired pressure.

Having thus explained my invention, What I claim as new, and desire to secure by Letters Patent, ist In a gasometer, the Weight L, cordsM, pulley-blocks m m and tank N, in combination with a counter-weight, 0, all constructed and arranged substantially as and for the purpose set forth.

JOHN HANLON. 

